In my opinion, there are three main characters in Among the Hidden. The three main characters are Luke Garner, Jen Talbot, and Jen's father, Mr. Talbot.
Both Luke and Jen are third children. They live in a society where they are illegal. The government has said that families may only have two children so as to prevent overpopulation. Because of this, Luke and Jen have to hide from the government.
Jen is killed while protesting against the ban on third children. After that, Mr. Talbot (who is a member of the police who enforce the ban) helps Luke get a false identity and a new life.
their is luke, jen and in my oppinian the other third children mentioned in the chat room.